211331520055 has 8 divisors (see below), whose sum is σ = 262342576800. Its totient is φ = 163235380896.

The previous prime is 211331519983. The next prime is 211331520091. The reversal of 211331520055 is 550025133112.

211331520055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211331520055 - 2¹³ = 211331511863 is a prime.

It is a super-2 number, since 2×211331520055² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728729235 + ... + 728729524.

It is an arithmetic number, because the mean of its divisors is an integer number (32792822100).

Almost surely, 2^211331520055 is an apocalyptic number.

211331520055 is a deficient number, since it is larger than the sum of its proper divisors (51011056745).

211331520055 is a wasteful number, since it uses less digits than its factorization.

211331520055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457458793.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 211331520055 its reverse (550025133112), we get a palindrome (761356653167).

The spelling of 211331520055 in words is "two hundred eleven billion, three hundred thirty-one million, five hundred twenty thousand, fifty-five".